Students with attention deficit hyperactivity disorder (ADHD) demonstrate behavior that distracts other students and requires additional attention from the teacher. Their "acting out" often becomes a model for other students wanting the same amount of attention. As educators, one must learn to identify and then redirect negative behavior in ways that discourage and prevent it in the future. When a student moves through a crisis, different stages of negative behavior become apparent and teachers must learn to recognize the stages and respond appropriately. Wyka (1987) classifies the stages as: anxiety, defensive, acting out, intimidation, and tension reduction. Here, the author recommends steps for physical educators to be effective in establishing positive classroom management as one of the best ways to prevent negative behavior and potential crises. (Contains 1 table.)